Question

Tolong dgn caranya ! ( no 1a dan 2b )

Answer 1

1. a)  -3m + 4n  - 6 + ( 7n -8m + 10 )
       = -3m + 4n - 6 + 7n - 8m + 10
       = -11m + 11n +4

2. b) 15a + 7b - 5c - (-11a -12b +13d)
       = 15a + 7b - 5c +11a + 12b - 13d
      = 26a +19b - 5c - 13d